P1 | Dodge Cummins Diesel 24V Head Stud Kit – 5.9L & 6.7L – S220 Series – Black Oxide Finish

P1 Dodge Cummins Diesel 24V Head Stud Kit – 5.9L & 6.7L – S220 Series – Black Oxide Finish

Part Number: K044-H02S

Upgrade cylinder-head retention in your Cummins with the P1 Dodge Cummins Diesel 24V Head Stud Kit, engineered for 1998-current 5.9L and 6.7L 24-valve Cummins engines.

Designed for performance diesel applications where elevated boost and cylinder pressure can place substantial load on the factory head-fastening system, the P1 S220 kit provides a high-strength solution for maintaining consistent cylinder-head clamping force.

P1’s S220 Series fasteners are rated at approximately 220,000 PSI nominal tensile strength and are manufactured from US-sourced steel. The studs are individually heat-treated, straightened and centreless ground, with threads rolled after heat treatment for increased strength and consistency.

The kit is supplied with 12-point nuts and precision washers, providing secure tool engagement and even distribution of clamping load across the cylinder head.

Finished in durable black oxide, the K044-H02S combines serious diesel-engine strength with the premium finish expected from P1 performance hardware.

Features & Benefits

• Designed for Dodge/Ram 24-valve Cummins diesel engines
• Suits 5.9L and 6.7L applications
• Designed for 1998-current engine combinations
• P1 S220 Series high-strength construction
• Approximately 220,000 PSI nominal tensile strength
• Designed for increased boost and cylinder pressure
• Helps maintain consistent cylinder-head clamping force
• Precision centreless-ground studs
• Threads rolled after heat treatment
• Supplied with premium 12-point nuts
• Hardened precision washers
• Black oxide finish
• Suitable for high-performance street, towing and competition diesel builds
• Manufactured for repeatable fit and installation

Technical Specifications

• Product Type: Cylinder Head Stud Kit
• Brand: P1 Manufacturing
• Engine Family: Cummins 24-Valve Diesel
• Engine Displacement: 5.9L / 6.7L
• Model Years: 1998–Current
• Fastener Series: S220
• Nominal Tensile Strength: Approximately 220,000 PSI
• Nut Style: 12 Point
• Finish: Black Oxide
• Application: High-Performance Diesel Cylinder Head Retention

What’s Included

• Complete P1 S220 Series cylinder-head stud set
• Matching 12-point nuts
• Precision hardened washers
• Torquepoint assembly lube and brush

Applications

• 1998-current Dodge/Ram Cummins diesel engines
• 5.9L 24-valve Cummins
• 6.7L Cummins
• High-boost diesel builds
• Performance street trucks
• Heavy towing applications
• Diesel drag racing
• Sled pulling
• Competition diesel engines
• Modified turbocharger applications
• Engines running increased cylinder pressure

Why Upgrade to Head Studs?

Cylinder pressure increases dramatically as boost, fuelling and engine output rise. Maintaining the seal between the cylinder head, head gasket and engine block becomes increasingly important as power levels increase.

A quality head-stud system provides more consistent clamping force than conventional production head bolts and reduces repeated loading on the block threads during engine assembly.

For modified Cummins engines, upgraded head studs are one of the most important reliability improvements when increasing boost and cylinder pressure.

Why P1 S220?

P1 S220 fasteners are engineered for demanding high-performance applications and carry a nominal tensile-strength rating of approximately 220,000 PSI.

P1 manufactures its critical fasteners in-house in the USA, including vacuum heat treatment, centreless grinding and post-heat-treatment thread rolling. The 12-point nuts are also manufactured and heat-treated in-house, while the washers are hardened and double-disc ground for consistency.

The result is a fastener system designed to deliver repeatable preload and dependable cylinder-head retention in demanding diesel applications.

Important Installation Notes

Always confirm engine year, block, cylinder head and gasket configuration before installation.

Correct stud lubrication, tightening sequence and final torque procedure are critical to achieving the intended fastener preload. Follow the current P1 installation instructions for K044-H02S or the recommendations of your engine builder.

Cylinder-head and block threads should be clean and free from damage before assembly.

Why Buy From Prime Speedworks

Prime Speedworks supplies P1 performance fasteners to diesel performance workshops, engine builders, race teams and enthusiasts throughout Australia.

From Cummins head and main stud kits through to Duramax, Power Stroke and performance petrol-engine fasteners, Prime Speedworks can help match the correct P1 hardware to your engine combination and intended power level.